[xmlunit/xmlunit.net] ca7194: add and fix some code comments

[GitHub <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/xmlunit/xmlunit.net
  Commit: ca719431ed8a44e1a458a58dcf7cb03bacc48299
      https://github.com/xmlunit/xmlunit.net/commit/ca719431ed8a44e1a458a58dcf7cb03bacc48299
  Author: Stefan Bodewig <ste...@fr...>
  Date:   2015-05-31 (Sun, 31 May 2015)

  Changed paths:
    M src/main/net-constraints/CompareConstraint.cs
    M src/main/net-constraints/ValidationConstraints.cs
    M src/main/net-constraints/XMLUnit.Constraints.csproj
    M src/main/net-core/Builder/DiffBuilder.cs
    M src/main/net-core/Builder/Input.cs
    M src/main/net-core/Builder/Transform.cs
    M src/main/net-core/Diff/AbstractDifferenceEngine.cs
    M src/main/net-core/Diff/ByNameAndTextRecSelector.cs
    M src/main/net-core/Diff/Comparison.cs
    M src/main/net-core/Diff/ComparisonTypes.cs
    M src/main/net-core/Diff/DOMDifferenceEngine.cs
    M src/main/net-core/Diff/DefaultComparisonFormatter.cs
    M src/main/net-core/Diff/DefaultNodeMatcher.cs
    M src/main/net-core/Diff/Diff.cs
    M src/main/net-core/Diff/ElementSelectors.cs
    M src/main/net-core/Diff/IDifferenceEngine.cs
    M src/main/net-core/Diff/MultiLevelByNameAndTextSelector.cs
    M src/main/net-core/Diff/XPathContext.cs
    M src/main/net-core/Input/AbstractSource.cs
    M src/main/net-core/Input/CommentLessSource.cs
    M src/main/net-core/Input/DOMSource.cs
    M src/main/net-core/Input/LinqSource.cs
    M src/main/net-core/Input/NormalizedSource.cs
    M src/main/net-core/Input/ReaderSource.cs
    M src/main/net-core/Input/StreamSource.cs
    M src/main/net-core/Input/WhitespaceNormalizedSource.cs
    M src/main/net-core/Input/WhitespaceStrippedSource.cs
    M src/main/net-core/Transform/Transformation.cs
    M src/main/net-core/Util/Nodes.cs
    M src/main/net-core/Validation/ValidationProblem.cs
    M src/main/net-core/Validation/ValidationResult.cs
    M src/main/net-core/XMLUnit.Core.csproj
    M src/main/net-core/Xpath/XPathEngine.cs

  Log Message:
  -----------
  add and fix some code comments